Steady-state flow exists in a pipe that undergoes a gradual expansion from a diameter of 40 in. to a diameter of 48 in. The density of the fluid (oil) in the pipe is constant at 55 lbm/ft. Given: PA1V1= PA2V2 If the flow velocity is 12.5 ft/sec in the 40 in. section, what is the flow velocity in the 48 in. section (ft/sec)? 11.4 8.7 9.3 O 14.2